Answer :

You need to subtract 16.2 from 1.6 which is (-14.6) then divde by 8 on both sides leaving you with n=-1.825 
8n + 16.2 = 1.6
8n = 1.6 - 16.2
8n = -14.6
n = -14.6 / 8
n= -1.825

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